NVIDIA releases OpenGL 4.4 beta drivers

[gregory38]

I will post a shorter shader when I got some free times

Basically the only difference is an alpha test
Good shader

void atst(vec4 c)
{ }

Bad shader. AREF is an uniform.

void atst(vec4 c)
    float a = trunc(c.a * 255.0 + 0.01);
    if ((a-AREF - 0.5f) < 0.0f)
            discard;

In both case texture sampler are defined like that

layout(bindless_sampler, binding = 0) uniform sampler2D TextureSampler;
layout(bindless_sampler, binding = 1) uniform sampler2D PaletteSampler;

[Piers Daniell]

@gregory38, I wasn't able to reproduce the problem you reported. I was able to compile and link your fragment shader fine and glProgramUniformHandleui64vARB appears to work correctly, at least on "TextureSampler". I couldn't try it with "PaletteSampler" because it appears that uniform is never referenced with PS_ATST set to either 1 or 6.

Is there any chance you're not using the correct location value for "TextureSampler"? For me, if I compile with PS_ATST with 6 then "TextureSampler" gets a location of "1" (and not 0). However, if you try to
call glProgramUniformHandleui64vARB with a location of "0" then you'll get "Element is invalid".

Basically, if you change your program in any way, including something simple like changing the PS_ATST value, you need to query all the locations again, because they may have changed.

[gregory38]

Is there any chance you're not using the correct location value for "TextureSampler"? For me, if I compile with PS_ATST with 6 then "TextureSampler" gets a location of "1" (and not 0). However, if you try to
call glProgramUniformHandleui64vARB with a location of "0" then you'll get "Element is invalid".

Ok that my issue, I used the same glcall which expect a location of 0. I was wrongly expecting location to follow the layout binding semantic. I guess "binding" is linked to image unit not "bindless uniform". Is there any way to specify a default location with layout, or is it a limitation of the extension? Might worth to add an error/warning that said "bindless sampler and binding layout property are incompatible".

[gregory38]

Is there any way to specify a default location with layout, or is it a limitation of the extension?

I guess I can use location

[Piers Daniell]

The OpenGL 4.4 beta drivers for both Windows and Linux have been updated. The new Windows version is 327.24 and the new Linux version is 325.05.14. The major fix in these new drivers is to a problem with rendering to layered sparse textures and an issue with 3D sparse textures. New drivers can be found in the usual place:
https://developer.nvidia.com/opengl-driver